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arsen [322]
3 years ago
12

An elements atomic number is 79. How many protrons would an atom of this element have?

Physics
1 answer:
Andrews [41]3 years ago
6 0
9 thats you electron number and what makes up 9 is 3 
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Express 9.39 x 109 seconds in terms of days
Allisa [31]

                     (9.39 x 10⁹ sec) x (1 day / 8.64 x 10⁴ sec)

                 =    (9.39 / 8.64) x 10⁵ days

                 =        108,680.56 days
4 0
3 years ago
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Difference between velocity ratio and efficiency​
Naddik [55]

Explanation:

Velocity ratio of simple machine is the ratio of distance travelled by effort to the distance travelled by load in the machine. The efficiency of a simple machine is defined as the ratio of useful work done by machine (output work) to the total work put into the machine (input work).

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5 0
3 years ago
Please help! 100 points + 50 + brainlist!!!
irakobra [83]

Explanation:

First find the displacement in the x direction:

dₓ = 449 cos 66° + 1112 cos 169° + 1571 cos 26°

dₓ = 182.6 − 1091.6 + 1412

dₓ = 503 km

Next, find the displacement in the y direction:

dᵧ = 449 sin 66° + 1112 sin 169° + 1571 sin 26°

dᵧ = 410.2 + 212.2 + 688.7

dᵧ = 1311 km

The magnitude is:

d² = dₓ² + dᵧ²

d² = (503)² + (1311)²

d = 1404 km

The angle is:

tan θ = dᵧ / dₓ

tan θ = 1311 / 503

tan θ = 2.61

θ = 69°

1404 km and 69° north of east from New Orleans is approximately Toledo.

4 0
3 years ago
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Interconversion of states of matter
Natali [406]
<h2>Answer:</h2>

<h3>Interconversion of matter refers to change of one State to another. it is a process by which matter changes from one State to another and back to original state, without any change in it's chemical composition. Solid can be converted into liquids by heating</h3>

<h2>Explanation:</h2>

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3 years ago
Durning which type of process does pressure remain consistent
Simora [160]

Answer:

\fbox {D. Isobaric}

Explanation:

The process during which pressure remains constant is called an isobaric process.

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2 years ago
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